diff --git a/pyproject.toml b/pyproject.toml
index 068839d1..740b414d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ target_version = [
 github_url = "https://github.com/jupyterhub/jupyter-remote-desktop-proxy"
 
 [tool.tbump.version]
-current = "1.2.1"
+current = "1.2.2.dev"
 regex = '''
     (?P<major>\d+)
     \.
diff --git a/setup.py b/setup.py
index 273e2c13..f8046ee9 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 setup(
     name="jupyter-remote-desktop-proxy",
     packages=find_packages(),
-    version='1.2.1',
+    version='1.2.2.dev',
     author="Jupyter Development Team",
     author_email="jupyter@googlegroups.com",
     classifiers=[